{% endfor %}

</div>
{% endif %}

## Sponsors

These are the **Sponsors**. 😎

They are supporting my work with **FastAPI** (and others), mainly through <a href="https://github.com/sponsors/tiangolo" class="external-link" target="_blank">GitHub Sponsors</a>.

{% if sponsors %}

{% if sponsors.gold %}

* 🌐 🔠 📄 🐢 Translate docs to Emoji 🥳 🎉 💥 🤯 🤯. PR [#5385](https://github.com/tiangolo/fastapi/pull/5385) by [@LeeeeT](https://github.com/LeeeeT).
* 📝 Add notification message warning about old versions of FastAPI not supporting `Annotated`. PR [#9298](https://github.com/tiangolo/fastapi/pull/9298) by [@grdworkin](https://github.com/grdworkin).

Mais si vous suivez bien les instructions ci-dessus, alors **FastAPI** pourra effectuer quelques optimisations et ainsi améliorer les performances.

## Détails techniques

Les versions modernes de Python supportent le **code asynchrone** grâce aux **"coroutines"** avec les syntaxes **`async` et `await`**.

Analysons les différentes parties de cette phrase dans les sections suivantes :

* **Code asynchrone**
* **`async` et `await`**

    password = user_dict["password"],
    email = user_dict["email"],
    full_name = user_dict["full_name"],
    hashed_password = hashed_password,
)
```

!!! warning
    The supporting additional functions are just to demo a possible flow of the data, but they of course are not providing any real security.

## Reduce duplication

Reducing code duplication is one of the core ideas in **FastAPI**.

### Context variables

Python 3.7 has <a href="https://docs.python.org/3/library/contextvars.html" class="external-link" target="_blank">`contextvars`</a> that can create a local variable very similar to `threading.local`, but also supporting these async features.

There are several things to keep in mind.

The `ContextVar` has to be created at the top of the module, like:

```Python
some_var = ContextVar("some_var", default="default value")

Ces informations seront incluses dans le schéma `OpenAPI` généré et utilisées par la documentation interactive ou les outils externes utilisés.

!!! note
    Gardez en tête que les outils externes utilisés ne supportent pas forcément tous parfaitement OpenAPI.

One of those distributed container management systems like Kubernetes normally has some integrated way of handling **replication of containers** while still supporting **load balancing** for the incoming requests. All at the **cluster level**.